The mixing drum is the key component of the whole three wheeled mixer truck. As the container for storing concrete, it plays a decisive role in preventing its solidification and segregation. It is composed of mixing cylinder, supporting wheel, etc. The cylinder is composed of front cone section, back cone section, cylindrical section, head, blade, feeding cone, raceway, etc. The front end is connected with the reducer, and the rear end is supported on the subframe by supporting wheels.
托轮起支撑滚筒体的作用，由支座、轴承座、轴、轴承等组成。搅拌筒的壳体及叶片都由高强度钢板制作而成，具有更高的耐磨性。经过优化设计的搅拌筒，还具有可靠的结构刚度，良好的耐磨性能，流畅地进出料，极低的残留量，既可搅拌混凝土，又可搅动输送预拌混凝土，决无出料离析现象，保障了混凝土的匀质性能。
The supporting wheel plays the role of supporting the roller body and is composed of a support, a bearing seat, a shaft, a bearing, etc. The shell and blade of the mixing drum are made of high strength steel plate, which has higher wear resistance. The optimized mixing drum also has reliable structural stiffness, good wear resistance, smooth feeding and discharging, and extremely low residue. It can not only mix concrete, but also agitate and transport ready mixed concrete, and has no discharge segregation phenomenon, ensuring the homogeneity of concrete.
搅拌车副车架是三轮底盘搅拌车主要的承重部分，作业时的载荷几乎都是通过它来支撑，加上在行使中由于路面的颠簸和加、减速形成的冲击载荷，都对副车架的结构提出很高的要求。整个副车架由主梁、前台支撑架、后台支撑架组成。主梁采用整体箱型结构梁，从根本上增强了它的抗扭、抗折、抗拉性能，保障了刚性要求。在副车架主梁下铺设带孔钢板以避开底盘上凸起的铆钉，同时让主梁的方向与底盘车身大梁方向保持一致，尽可能加大副车架与底盘的接触面积。另一方面，在两根主梁之间加装辅助横梁，调整主梁各段的刚性，让载荷在副车架整个长度上更均匀的分布。
Mixer subframe is the main load-bearing part of the three wheel chassis mixer. The load during operation is almost supported by it. In addition, the impact load caused by the bumpy road surface and acceleration and deceleration during operation puts forward high requirements for the structure of the subframe. The whole sub frame is composed of main beam, front support frame and back support frame. The main girder adopts the integral box structure beam, which fundamentally enhances its torsion resistance, bending resistance and tensile performance, and ensures the rigidity requirements. The steel plate with holes shall be laid under the main beam of the subframe to avoid the protruding rivets on the chassis. At the same time, the direction of the main beam shall be consistent with the direction of the main beam of the chassis body, and the contact area between the subframe and the chassis shall be increased as much as possible. On the other hand, the auxiliary beam is added between the two main beams to adjust the rigidity of each section of the main beam, so that the load is more evenly distributed in the whole length of the subframe.
进出料装置由进料斗、出料斗、主卸料槽、副卸料槽、支架、锁紧架等组成，是三轮底盘搅拌车的重要组成部分，直接影响到进出料的速度和质量。进、出料斗通过支架和副车架的后台支撑架相连。
The feeding and discharging device is composed of feeding hopper, discharging hopper, main discharging groove, auxiliary discharging groove, bracket, locking frame, etc. it is an important part of three wheel chassis mixer, which directly affects the speed and quality of feeding and discharging. The feeding hopper and the discharging hopper are connected with the backstage support frame of the subframe through a bracket.
出料斗及主卸料槽内加有衬板，衬板采用高强度细晶粒合金钢，其耐磨能力为Q345A（原16Mn）的1.59倍，大幅度的提高了耐磨性。主卸料槽能使混凝土朝所要求的方向卸出，副卸料槽起延长主卸料槽的长度的作用。在副卸料槽接长时，拉下副卸料槽上的锁柄，锁紧。锁紧架在卸料槽不工作时，将主卸料槽锁定。
The liner is made of high strength fine grain alloy steel. Its wear resistance is 1.59 times of Q345A (original 16Mn), which greatly improves the wear resistance. The main discharge chute can discharge the concrete in the required direction, and the auxiliary discharge chute can extend the length of the main discharge chute. When the auxiliary discharge chute is lengthened, pull down the lock handle on the auxiliary discharge chute to lock. The locking frame locks the main discharge chute when the discharge chute is not working.
操作系统由控制器、联动轴、软轴及连杆机构组成，主要控制搅拌筒的转速及旋转方向。三轮底盘搅拌车后部两侧各布置一套控制器，左右控制器可以实现联动，控制器上只有一根操纵杆，接出端分别通过连杆机构连接到变量泵上，通过改变泵上控制柄的角度来调节油泵的流量，实现控制筒体转动的方向和速度，可以左右移动来控制；同时还有接出端通过软轴连到发动机的油门上，在需要加大转速时可上下操纵来控制此操纵杆来实现筒体转速的提高。
The operating system is composed of controller, linkage shaft, flexible shaft and linkage mechanism, which mainly controls the rotation speed and direction of mixing drum. A set of controllers are arranged on both sides of the rear of the three wheel chassis mixer truck, and the left and right controllers can realize linkage. There is only one control rod on the controller, and the connecting end is connected to the variable displacement pump through the connecting rod mechanism. The flow of the oil pump is adjusted by changing the angle of the control handle on the pump, so as to realize the control of the direction and speed of the cylinder rotation, which can be controlled by moving left and right; At the same time, the connecting end is connected to the throttle of the engine through the flexible shaft. When the speed needs to be increased, it can be controlled up and down to control the control lever to improve the cylinder speed.
